Question 1009617
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F=first number; S=second number
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2F+15=S
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S+13=9F-7
(2F+15)+13=9F-7
2F+35=9F
35=7F
5=F
ANSWER 1: The first number is 5.
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S=2F+15=2(5)+15=10+15=25
ANSWER 2: The second number is 25.
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CHECK:
S+13=9F-7
25+13=9(5)-7
38=45-7
38=38